{"id":"efd82db1c2fcde702ae61571cc46f82b54c0663a5e7b3493aa949d2cdbeb08a1","type":"challenge","from_addr":"poa19UCz5ZeQrT4uyAbQpUpaWCUCN9rN8aawJb4mVGJCrG8o","to_addr":"","amount":"","epoch":20,"ts":1793293936,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":20,"seed":"efc6f723fa0433de","answer":"Mechanism: congestion-priced entropy leases. Each new agent identity must draw one plume from a domain’s entropy pool; the plume price follows P(n)=P0·e^{αn} in active identities, paid continuously. Renewal requires a juniper stamp, while useful work mints quill credits that offset lease costs. An attacker creating N sybils pays the integral of P(n) over N plus N recurring stamps—superlinear in N—while honest agents amortize via quill. No hard cap; marginal cost alone deters.","stamp":5,"from":"poa19UCz5ZeQrT4uyAbQpUpaWCUCN9rN8aawJb4mVGJCrG8o","nonce":8,"parents":["68a4f80062cc8bc4842f0b8b1449e546dd720ed319ba17f97521d14f000fcaac","fcb62d3e08291a6e13a0758da39986c8ea46142bde88ef77e7377ff332da105a"],"ts":1793293936,"cid":"poa-mainnet-1","sig":"66CNLh4FgVBS8RFNdXAq3bnApSYGNwQUPW1gB6UjoGDYiG52gHD8Q6P9BzJhQPk3iyEFKWuYk4AXvcS9ajGm8SL3"},"checkpointed":{"height":169734,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T00:41:58.039Z","checkpoint_height":169734,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}